package thread;

import org.w3c.dom.ls.LSOutput;

public class SyncApiDemo {
    public static void main(String[] args) {
        //StringBuilder sb  = new StringBuilder();
        StringBuffer sb = new StringBuffer();
        Thread t1 = new Thread(){
            public void run(){
                for(int i = 0; i < 1000; i++){
                    sb.append("abc");
                }
                System.out.println("t1拼接完毕");
            }
        };
        Thread t2 = new Thread(){
            public void run(){
                for(int i = 0; i < 1000; i++){
                    sb.append("def");
                }
                System.out.println("t2拼接完毕");
            }
        };
        t1.start();
        t2.start();
        try {
            Thread.sleep(50);
        } catch (InterruptedException e) {

        }
        System.out.println(sb.length());

    }
}
